Improvement in ranges



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Ranga. N0. 159,298. Patented Feb. 2,1875;

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Range. No, \59,293 Patented Feb.2,1a75.

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WITNESSES: INVENTOB z M l m a @MM AMW* uw ATTUBNEYS.

FFICE.

EDWIN O. BBINGKEBHOFF, .OF NE`W YORK, N. Y.

IMPROVEMENT IN RANGES.

Specification forming part of Letters Patent No. 159,29S, dated February 2,1875; application led January 11, 18.75.

- To all whom lit may concern:

Be it known that I, EDWIN O. BRINGKER- HOFF, of New York city, in the county and State of New York, have invented a new aud useful Improvement in Range, of which the following is a specification:

Figure lis a top view of my improved range, part of the top plate being broken away. Fig. 2 is a front view of the same. Fig. 3 is a horizontal section of the same taken through the line s s, Fig. 2. Fig. 4 is a horizontal section of the same taken through the line U U, Fig. 2. Fig. 5 is a horizontal section of the same taken through the line V V, Fig. 2. Fig. 6 is a vertical section of the same taken through the line W W, Fig. l. Fig. 7 is a vertical section of the same taken through the line X X, Fig. 1. Fig. S is a vertical section of the same taken through the line Y Y, Fig. 1. Fig. 9 is a vertical section of the same taken through the line Z Z, Figs. l and 2.

Similar letters of reference indicate correspondin g parts.

My invention has for its object to furnish an improved range the iues of which shall be so arranged that it may be thoroughly and uniformly heated for baking purpose, that it may be used for boiling purposes without being wholly heated, may have a strong draft, and may be easily manipulated to control the heat.

The invention consists in the combina-tion of the forward rear flues, the upper bottom hues, the side ues, andthe lower bottom flues with each other and with the eases or shells of a range and the chimney-hue; in the combination of the damper with the two sets of fines and the rear chimney-flue; and in the combination of the damper with the rear chimneylue, the Atwo sets of flues, and the opening leading into the space between the top-plates of the cases or shells of the range, as hereinafter fully described.

A is the outer case or shell of the range. B

'is the inner case or shell that iucloses the oven,

and C is the chimney-hue. Spaces are left between the top, bottom, side, and rear plates of the two shells A B, for the formation of flues for the passage of the products of combustion. The space between the rear plates of the two shells AB is divided into two iiuespaees by a vertical division-plate, as shown in Figs. 5 and 6. The space between the bottom plates of the two shells A B is divided into two hue-spaces by a horizontal plate, as shown in Figs. 6, 7, and 8. rIhe lower part of the chimney-flue is divided into two flues by a vertical plate placed parallel with the rear plates of the shells A B, as shown in Figs. 4, 5, and 6, and in dotted lines in Fig. 9. The part of the chimney-flue above the top plate of the shell A is provided with double walls upon its front and sides, inclosing air-chambers, to prevent the radiation of heat.

I will describe the various flues in connection with the course of the products of combustion as they pass through them.

D is the fire-chamber, which is formed in the upper front part of the range, and opens directly int-o the space between the top plates of the shells A B. In the rear part of the top plate of the shell B, which projects over the two rear flue-spaces, are formed five holes. E2 E1 E El E2, leading into the forward rear iiuespace. "The sum of the areas of the ve holes E, and also of the five tlues that lead from them,is equal to the area of the chimney-hue, and generally the sum of the areas through which the products of combustion are passing at any given part of their passage is always equal to the area of the chimney-fine. From the ve holes E the products of combustion pass down through the ve ilues F2 F1 F FI F2 in the forward rear fine-space, and thence into the ve ues G2 G1 G G1 G2 in the upper bottom flue-space. At the front of the said upper bottom space the products of combustion passing through the flue G divide and pass through the lateral ues G to the flues H in the side flue-spaces. The products of combustion that pass through the fiues G1 return through the flues 1Gl into the flues lFl, and return through the flues 2F1 and 2G1, and pass through the lateral flues G1 into the side flues H. The products of combustion that pass through the lues G2 return through the iiues 1G2 into the iiues 1F2, return through the ues 2F2 and 2G2, and pass through the lateral lues G2 into the side flues I-I. The course of the products of combustion from the ire-box D to the side lues H is indicated by the arrows a b and l to 6. rIhe products of combustion are again united in the side iiues H. In the side flue-spaces the products of combustion pass up through the iiue H, down through the iiue- H1, up through the flue H2, down through the flue H3, at the bottom of which they divide, part passing into the flue I of the lower bottom Hue-space, and part passing through the iiue H4 into the flue H5, up which it passes, and then passes down into the iiue I. The united products of combustion pass forward through the dues I, back through the lues I1, forward through the lues I2, bach through the lines I3, into the rear chimney-Hue J. The course of the products of combustion through the side iiues H and the lower bottom ilues I is indicated by the arrows 6 and 7 in Figs. 3, 6, and 9. The passage oi' the products of com bustion through the lues F G H I heats the entire range thoroughly and evenly, and is the arrangement employed when the range is to be used for baking purposes.

I will now describe the course of the products of combustion when the range is to be used for boiling purposes, and does not require to be wholly heated. In this case the damper K is turned down, which closes the opening between the tlues I and the rear chimney-flue J, and consequently prevents the passage ot'theproducts of combustion through the tlues G H I, and causes them to pass from the lower ends of the ues F2 F1 F F1 F2 into the llower ends of the ues L2 L1 L L1 L2 in the outer rear tlue'space. The products of combustion from the fines F2 pass up through the lues L2, down through the ilues 1L2, up through the flues 2L2, down through the ilues 3L2, and up through the ues 4L2, into the lateral ilue L. The products of combustion from the tlucs F1 pass up through the ilues L1, down through the iiues lL1, up through the flues 2L1, down through the lues 3L1, and up through the tlucs 4L1, into the lateral ue L. The products of combustion from the flue F pass up into the lateral flue L. From the lateral flue L the products of combustion pass into the upper part of the forward chimney-flue J', from the lower end of which they pass into the rear chimney-flue J. The damper K is operated by a rod, 7c', that passes forward through the upper bottom flue-space, and out through the forward part ot' the side plate of the shell or case A. When turned up, the damper K sends the products of combustion through the iiues F G H I, into the rear chimney-flue J, and when turned down it sends the products ot' combustion through the fines F L, and the forward chimney-flue J into the vrear chimney-flue J. M is a damper, which, when turned up, closes an opening leading from the space between the top plates of the cases or shells A B into the rear chimneylue J, and when turned down opens said opening and closes the lower part of the rear chimney-flue J, preventing the products of combustion from passing through any of the fines F G H I L, and causing them to pass directly from the fire-box into the rear chimney-tlue, thus producing a direct draft. The damper M is operated by a rod, m', extending out through the top plate of the case A. N is a sliding damper placed in the upper part of the chimney-Hue, to enable the draft of the range to be readily controlled, and which is operated by a rod, n', extending out through the front of the chimney/dine, as shown in Figs. 2 and 6.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is Y 1. The combination of the iiues F G H I with each other and with the cases or shells A B of a range, and the chimney-hue J, sub- EDWIN O. BBINCKERHOFF.

Witnesses:

JAMES T. GRAHAM, T. B. MosHER. 

